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Area Code 231
Massachusetts area code 231 has been in service since 1999. It has 304 landlines and 95 wireless prefixes (exchanges) serviced by 37 carriers. It covers 24 counties, 593 ZIP codes, and 129 cities, including Muskegon, Traverse City, Ludington, Cadillac, Petoskey, Cheboygan, Manistee, Big Rapids, and Charlevoix.
- State:
- Massachusetts
- Time Zone:
- Eastern (2:47 pm)
Area Code (231) has 400 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (231) 123- | Suffolk | Charlestown | Unknown | |
| (231) 206- | Muskegon | Muskegon | Nextel Communications, Inc. | Cell Phone |
| (231) 207- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 209- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 215- | Muskegon | Muskegon | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 218- | Grand Traverse | Traverse City | Nextel Communications, Inc. | Cell Phone |
| (231) 219- | Mecosta | Big Rapids | Telnet Worldwide, Inc. | Landline |
| (231) 220- | Muskegon | Muskegon | Local Exchange Carriers Of... | Landline |
| (231) 221- | Muskegon | Muskegon | Unknown | Landline |
| (231) 222- | Charlevoix | East Jordan | Level 3 Communications, Llc... | Landline |
| (231) 223- | Grand Traverse | Traverse City | Peninsula Telephone Co. | Landline |
| (231) 224- | Leelanau | Suttons Bay | Lucre, Inc. | Landline |
| (231) 225- | Kent | Grand Rapids | Level 3 Communications, Llc... | Landline |
| (231) 228- | Leelanau | Cedar | Centurytel Of Michigan Inc... | Landline |
| (231) 229- | Missaukee | Lake City | Centurytel Of Michigan Inc... | Landline |
| (231) 232- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 233- | Mason | Ludington | Alltel Communications, Inc.... | Cell Phone |
| (231) 234- | Kent | Grand Rapids | Unknown | Landline |
| (231) 235- | Muskegon | Muskegon | Telnet Worldwide, Inc. | Landline |
| (231) 236- | Muskegon | Muskegon | Telnet Worldwide, Inc. | Landline |
| (231) 237- | Charlevoix | Charlevoix | Ameritech Michigan | Landline |
| (231) 238- | Cheboygan | Indian River | Ameritech Michigan | Landline |
| (231) 239- | Mason | Ludington | Centurytel Wireless, Inc.-mi | Cell Phone |
| (231) 240- | Mason | Ludington | Telnet Worldwide, Inc. | Landline |
| (231) 241- | Muskegon | Muskegon | Daystarr, Llc Dba Daystarr... | Landline |
| (231) 242- | Emmet | Harbor Springs | Ameritech Michigan | Landline |
| (231) 243- | Leelanau | Lake Leelanau | Telnet Worldwide, Inc. | Landline |
| (231) 248- | Los Angeles | San Dimas | Unknown | Landline |
| (231) 249- | Mason | Ludington | Lucre, Inc. | Landline |
| (231) 250- | Mecosta | Big Rapids | Alltel Communications, Inc.... | Cell Phone |
| (231) 256- | Leelanau | Lake Leelanau | Ameritech Michigan | Landline |
| (231) 258- | Kalkaska | Kalkaska | Ameritech Michigan | Landline |
| (231) 259- | Oceana | Shelby | Charter Fiberlink - Michiga... | Landline |
| (231) 262- | Newaygo | Grant | Acd Telecom, Inc. - Mi | Landline |
| (231) 263- | Grand Traverse | Kingsley | Century Tel Co Northern Mic... | Landline |
| (231) 264- | Antrim | Elk Rapids | Ameritech Michigan | Landline |
| (231) 266- | Lake | Irons | Ameritech Michigan | Landline |
| (231) 267- | Grand Traverse | Williamsburg | Ameritech Michigan | Landline |
| (231) 268- | Cheboygan | Cheboygan | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 269- | Wexford | Buckley | Ace Telephone Co. Of Michig... | Landline |
| (231) 271- | Leelanau | Suttons Bay | Centurytel Of Michigan Inc... | Landline |
| (231) 275- | Grand Traverse | Interlochen | Centurytel Of Michigan Inc... | Landline |
| (231) 276- | Grand Traverse | Grawn | Ameritech Michigan | Landline |
| (231) 282- | Newaygo | Grant | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 286- | Muskegon | Muskegon | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 287- | Newaygo | Newaygo | Centurytel Wireless, Inc.-mi | Cell Phone |
| (231) 288- | Muskegon | Muskegon | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 290- | Mackinac | Mackinac Island | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 292- | Mecosta | Big Rapids | Charter Fiberlink - Michiga... | Landline |
| (231) 293- | Ottawa | Spring Lake | Unknown | Landline |
| (231) 294- | Newaygo | Fremont | Unknown | Landline |
| (231) 296- | Ottawa | Grand Haven | Unknown | Landline |
| (231) 301- | Oceana | Hart | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 307- | Mecosta | Morley | Centennial Michiana License... | Cell Phone |
| (231) 308- | Manistee | Manistee | Telnet Worldwide, Inc. | Landline |
| (231) 313- | Grand Traverse | Traverse City | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 316- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 318- | Ottawa | Coopersville | Usa Mobility Wireless, Inc. | Cell Phone |
| (231) 322- | Kalkaska | Rapid City | Frontier North, Inc. - Mi | Landline |
| (231) 323- | Newaygo | Newaygo | Lucre, Inc. | Landline |
| (231) 325- | Benzie | Honor | Centurytel Of Michigan Inc... | Landline |
| (231) 326- | Leelanau | Empire | Centurytel Of Michigan Inc... | Landline |
| (231) 327- | Muskegon | Muskegon | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 328- | Missaukee | Merritt | Centurytel Of Michigan Inc... | Landline |
| (231) 329- | Muskegon | Muskegon | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 330- | Emmet | Petoskey | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 331- | Antrim | Alden | Frontier North, Inc. - Mi | Landline |
| (231) 332- | Muskegon | Muskegon | Telnet Worldwide, Inc. | Landline |
| (231) 333- | Cheboygan | Cheboygan | Level 3 Communications, Llc... | Landline |
| (231) 334- | Leelanau | Glen Arbor | Centurytel Of Michigan Inc... | Landline |
| (231) 335- | Newaygo | Fremont | Centennial Michiana License... | Cell Phone |
| (231) 337- | Muskegon | Muskegon | Lucre, Inc. | Landline |
| (231) 338- | Grand Traverse | Traverse City | Lucre, Inc. | Landline |
| (231) 340- | Bedford | Bedford | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 342- | Grand Traverse | Traverse City | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 343- | Muskegon | Muskegon | Sprint Spectrum L.p. | Cell Phone |
| (231) 344- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 345- | Muskegon | Muskegon | Lucre, Inc. | Landline |
| (231) 346- | Leelanau | Glen Arbor | Telnet Worldwide, Inc. | Landline |
| (231) 347- | Emmet | Petoskey | Ameritech Michigan | Landline |
| (231) 348- | Emmet | Petoskey | Ameritech Michigan | Landline |
| (231) 349- | Kent | Grand Rapids | Alltel Communications, Inc.... | Cell Phone |
| (231) 350- | Antrim | Bellaire | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 351- | Osceola | Reed City | Telnet Worldwide, Inc. | Landline |
| (231) 352- | Benzie | Frankfort | Ameritech Michigan | Landline |
| (231) 353- | Baraga | Baraga | Telnet Worldwide, Inc. | Landline |
| (231) 354- | Montcalm | Coral | Ameritech Michigan | Landline |
| (231) 355- | Newaygo | White Cloud | Telnet Worldwide, Inc. | Landline |
| (231) 356- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 357- | Grand Traverse | Traverse City | Cellco Partnership Dba Veri... | Cell Phone |
| (231) 358- | Grand Traverse | Traverse City | Telnet Worldwide, Inc. | Landline |
| (231) 360- | Leelanau | Glen Arbor | New Cingular Wireless Pcs,... | Cell Phone |
| (231) 361- | Osceola | Reed City | Telnet Worldwide, Inc. | Landline |
| (231) 362- | Manistee | Kaleva | Kaleva Telephone Company | Landline |
| (231) 363- | Muskegon | Whitehall | Telnet Worldwide, Inc. | Landline |
| (231) 364- | Kent | Grand Rapids | Unknown | Landline |
| (231) 365- | Antrim | Eastport | Telnet Worldwide, Inc. | Landline |
| (231) 366- | Muskegon | Fruitport | Level 3 Communications, Llc... | Landline |
| (231) 368- | Kalkaska | Fife Lake | Telnet Worldwide, Inc. | Landline |
| (231) 369- | Kalkaska | South Boardman | Ace Telephone Co. Of Michig... | Landline |
